Ventilator



June 11, 1929; L; J, SHEPERD 1,717,268

VENTILATOR Filed March 28, 1928 1 1.1 1 1dlilllllllllllllllllllfln mml INVENTOR B ZZ/ 717116! ATTQRNEY WITNESSES Patented June 11, 1929.

UNHTED STATES Louis J. snnrnn-n, or NEW YORK, 1v.

PATENT OFFICE.

ASSIG-NOR 'I'O GEORGE ANDERSON & SON.

OF ASTORIA, NEW YORK, A CQPARTNERSHII COMPOSED OF GEORGE ANDERSON AND WILLIAM ANDERSON.

VENTILATOR.

Application filed March 28, 192a Serial No. 265,453.

This invention relates. to ventilators, and has for an object to provide an improved construction wherein the movement of the air will produce a rarett'action or suction to draw odors and air through the device and force the same to a discharge point.

Another object of the invention is to provide an improved ventilator or cowl formation adapted to be placed on top of ventilating pipes or similar structures, and formed so that air passing in a horizontal direction will produce a rarefaction in the upper part of the device and thereby draw air and other gaseous matter upwardly and force the same out of the ventilating pipes.

A further object, more specifically, is to provide a ventilator in the nature of a cowl, wherein all the parts are stationary, and wherein the parts are so formed as to present protecting plates and, deflecting plates for utilizing the movement of the airin producing a suction in the pipe to which the device is secured.

In the accompanying drawing Figure 1 is a side view with certain parts broken away, illustrating an embodiment of the invention.

Figure 2 is a view similar to Figure 1 but looking at the construction at about 15 from Figure 1.

Figure 3 is a top plan view of the struc ture shown in Figure 1.

Figure 1 is a bottom plan view of the structure shown in Figure 3.

Figure 5 is a vertical sectional view through a slightly modified form to that shown in Figure 2.

Referring to the accompanying drawing by numerals, 1 indicates a tubular member adapted to slip over or within a vent pipe for a building of any kind. In most buildings, vent pipes extend up through a root or in that vicinity, and carry of]? different odors as well as foul air from rooms and the like. here the vent pipe opens directly into the atmosphere, the difference in weight of the warm air and odors will cause them to rise and escape out the top. This action plied to a vent, will suck or draw upwardly foul air, odors and the like when the wind is blowing, and when the atmosphere is still, the structure will permit the four air to automatically move up through the action of gravity. The tubular member 1 may be of any desired length, but is preferably coinparatively short and is connected to an an nular plate 2 by solder, welding, riveting or other means. The annular plate 2 may be made up of many pieces or of one piece, ant is preferably square exteriorly, but provided with a bore 3. This bore is not quite round, and in fact, the various individual side sections at of plate 2 are formed with arcshaped portions5 whereby the tubular memher 1 is secured to plate 2 substantially at the respective points 6. This will leave openings 7 adjacent each of the corners of the plate as illustrated clearly in Figure 1.

From Figure 2 it will be noted that the plate 2 inclines upwardly from the tubular member 1, and at the corners is secured to'an air deflecting band. 8. The band 8 may be secured to plate 2 by solder, welding, rivets or other means without departing from the spirit of the invention. WVhen the plate 2 is square, band 8 is octagonal and the cover 9 is substantially square at the bottom but pointed in the nature of a pyramid. The cover 9 at its corners, is soldered, welded or otherwise rigidly secured to band 8, but the band 8 is so positioned that the lowermost points 10 of the band are substantially in line with the lowermost points 11 of plate 2, while the lowermost points 12 of the upper edge of band 8 are a short distance above the edge 13 of cover 9. The highest points 14 of band 8 come in line with the ridges 15 of cover 9, whereby the low points 12 come in line with the center between two ridges 15. This is important in that air passing along horizontally over point 12 will strike the flat inclined part of the cover 9 and be deflected upwardly so as to produce a suction or rarefaction in the respective spaces 16, Which spaces are in free communication with the interior of the cover 9 and tubular member 1. Air striking horizontally against the plate 4 will be deflected laterally and downwardly and, consequently, will produce a slight draft or suction in the various openings 7. In this way there will be a suction both upwardly and downwardly from the chamber formed by band 8, plate 2, cover 9 and associated parts. It will, of course, be evident that most of the suction or raretaction is produced by the air striking the cover 9 as described, and also by passing in a parallel manner over adjacent surfaces of the cover 9 to the one facing the wind. By reason of this construction, whenever there is a wind blowing there will be son'lething in the nature of a draft or suction in the ventilator, and it the atmosphere is still, the ventilator is amply open to allow for the escape of foul air and odors under the usual action oi gravity which causes the lighter air or odors to rise, while the heavier cold air moves downwardly. In Figure 5 a slight change has been made which is particularly adapted for large ventilators. This change is the provision of an inverted pyramidal-shaped member 17. This member defleets the upward flowing air in pipe 1 so that it will pass quickly from beneath the cover 9. Aside from the use of the member 17', the structure is identical with that shown in the other figures and therefore no additional descriptionwill be given.

hat I claim is:

1. A ventilator, comprising a tubular memher, a plate having an irregular hole extending therethrough fitting over said tubular member and rigidly secured thereto, said plate on its perimeter being square,'an octagon-shaped band surrounding said plate and secured in certain of its corners to the respective corners of said plate, and a pointed cover ing member square at the base secured to said band interiorly thereo'ta-nd below the-upper edge, said covering member at the center projecting appreciably above said band whereby air striking said plate and said covering member will be deflected and produce a partial rarefaction within the upper end or said tubular member.

2. A ventilator, comprising a tubular member,'an aperti'ired plate connected therewith having a square perimeter, an octagon-shaped ban-d connected with said plate at the corners of the plate, and pyramid-shaped cover con-' nected with said band above said plate but below the upperedge of the-band whereby when air strikes the-cover it will be deflected and produce a partial rarefaction fordrawing air and gases from said tubular member.

A ventilator, comprising a tubular Inemher, an 'apertured plate connected therewith having a square perimeter, an 1 octagonalshaped band connected'to' said plate at the corners thereof, a pyramid-shaped cover connected with said band above said plate but below the upper edge of the band, whereby when the air strikes the cover it'will' be de' looted andproduce a partial raretaction for drawing air and gas from said tubular ineniher, and a downwardly inclined pointed defiector secured to said cover on the under surface and positioned so that-th'e-point will be within said tubular member.

LOUIS J. snnrnnn. 

